The dot at the end of this sentence has a mass of about one microgram. Assuming that black stuff is carbon, calculate approximate atoms of carbon needed to make such a dot.

Explanation

To solve the problem of calculating the approximate number of carbon atoms needed to make a dot with a mass of about one microgram, we can follow these steps:

### Step 1: Understand the mass of the dot
The mass of the dot is given as 1 microgram, which can be expressed in grams:
\[ 1 \text{ microgram} = 1 \times 10^{-6} \text{ grams} \]

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